Otto voigt



(No Model.)

0. VOIGT.

MACHINE FOR MIXING GROUND COFFEE.

No. 415,851. Patented Nov. 26, 1889.

N. PETERS. Phntu-Lilhogmpher. wmin em 0.x;

UNITED STATES PATENT ()FFICE.

OTTO VOIGT, OF LI IBECK, PRUSSIA, GERMANY.

MACHINE FOR MIXING GROUND COFFEE.

SPECIFICATION forming part of Letters Patent No. 415,851, dated November 26, 1889.

Application filed September 18, 1889. Serial No. 324,325. (No model.) Patented in Belgium May 31, 1889, No. 86,279, and in France August 2, 1889, No. 198,804.

To all whom it may concern.-

Be it known that I, OTTO VOIGT, a subject of the King of Prussia, residingat Liibeck, Prussia, German Empire, have invented certain new and useful Improvements in Machines for Mixing Ground Coffee and other Victuals, (for which I have obtained a patent in Belgium, No. 86,279, dated May 31, 1889, and in France, No. 198,304, dated August 2, 1889,) of which the following is a specification.

This invention relates to a machine for effectively mixing different qualities of ground cofiee, spices, rice, and similar articles.

It consists in the various features of improvement more fully pointed out in the claim.

In the accompanying drawings, Figure 1 is a side elevation ofmy improved mixing-machine. Fig. 2 is an end elevation thereof. Fig. 3 is a vertical longii udinal section through the drum; Fig. 4,21. Vertical transverse'section thereof. Figs. 5, 6, and 7 are detail face views of the plates F G 1-1, respectively; Fig. 8, a cross-section on line 00 m, Fig. 5. Fig. 9 is a perspective view of the hopper.

The letter A represents a frame or standard carrying the bearings of a drum B. This drum may be revolved by a suitable crankhandle a, keyed to its shaft b. The drum B is composed of two metal. heads O, to which is attached the circumferential plate B. This plate has an opening which may be closed by a sliding cover E. Within this opening there fits a removable hopper T.

Within the drum B there are secured a series of radial plates F G H. These plates have the flanges d, by which they are riveted to the heads 0. The radial plates are all set back from-the periphery of the drum, so that a 0011- tinuous free space J is left within the drum around its entire circumference. A similar free space M is left at the center of the drum,

as the radial plates should not reach quite up to the center. Each of the plates F G H is partly cut away, and the cut-away portions of the difierent plates are differently located, so that the full portions of any one plate break line, either entirely or partially, with the full portions of the following plates. Thus the plates H to both sides of the slide E are shaped like gridirons. Then come the plates G, with a slot at each side. Then come the plates F, with a central slot, and then comes another plate G. The object of this arrangement is to cause a thorough agitation of the matter to be mixed.

In use the drum is turned so that the cover E is on top. Then the hopper is put in place and the matter to be mixed is introduced, after which the hopper is removed and the cover closed. By revolving the drum its contents will become thoroughly intermixed. The free space J within the drum serves to prevent any material from adhering at the outer ends of the radial plates. Moreover, this space aids in the mixing process and also in the discharge. also serves to permit a free movement of the particles to be mixed.

What I claim is The combination of standard A with a revolving drum B and With a series of open radial plates within the drum, the full portion of which break line, the plates being secured to the drum-heads in such a manner that a continuous open space is left at the outer and also at the inner ends of the plates, substantially as specified.

In testimony whereof I hereunto sign my name, in the presence of two subscribing witnesses, this 3d day of September, 1889.

OTTO VOIGT.

\Vitnesses:

F. VON LoWTzow, F. KAROL.

The central free space M, of course, 

